/**
* Builds a String result for Elastic Search from an RDFNode
*
* @param node An RDFNode representing the value of a property for a given resource
* @return If the RDFNode has a Literal value, among Boolean, Byte, Double, Float, Integer Long,
* Short, this value is returned, converted to String
* <p>If the RDFNode has a String Literal value, this value will be returned, surrounded by
* double quotes
* <p>If the RDFNode has a Resource value (URI) and toDescribeURIs is set to true, the value
* of @getLabelForUri for the resource is returned, surrounded by double quotes. Otherwise,
* the URI will be returned
*/
private String getStringForResult(RDFNode node, boolean getNodeLabel) {
String result = "";
boolean quote = false;
if (node.isLiteral()) {
Object literalValue = node.asLiteral().getValue();
try {
Class<?> literalJavaClass = node.asLiteral().getDatatype().getJavaClass();
if (literalJavaClass.equals(Boolean.class)
|| Number.class.isAssignableFrom(literalJavaClass)) {
result += literalValue;
} else {
result = EEASettings.parseForJson(node.asLiteral().getLexicalForm());
quote = true;
}
} catch (java.lang.NullPointerException npe) {
result = EEASettings.parseForJson(node.asLiteral().getLexicalForm());
quote = true;
}
} else if (node.isResource()) {
result = node.asResource().getURI();
if (getNodeLabel) {
result = getLabelForUri(result);
}
quote = true;
}
if (quote) {
result = "\"" + result + "\"";
}
return result;
}